Symptoms can include weakness, weight loss and easy bruising or bleeding. Treatments include chemotherapy, drugs and radiation therapy.

Irsay said Pagano’s wife pushed him to see the doctor after noticing unusual bruising on the coach’s body.

The initial phase of treatment usually requires a hospital stay of four to five weeks, though Irsay later acknowledged he expected Pagano to be in hospital for at least six weeks.

Cripe said Pagano began the “arduous” treatment last week and that many adults do recover from the disease. For now, Pagano is being kept in a “protected” hospital environment, where air is filtered and hand-washing is essential.

Pagano was admitted last Wednesday evening — the team had a bye this weekend and the players and assistants, other than Arians, were not told Pagano was ill until Monday morning.